| jactancioso | braggart |
| jactar-se | show off |
| jactância | boastfulness |
| jacu | guan |
| Jacundá | Crenicichla |
| Jacupemba | Penelope superciliaris |
| Jacó | Jacob |
| Jacó Armínio | Jacobus Arminius |
| Jacó Dois-Dois | Jacob Two-Two |
| Jada Pinkett Smith | Jada Pinkett Smith |
| Jadarita | Jadarite |
| jade | jade |
| jadeda | jadeyle |
| Jaenam Musul Won Foundation | Jaenam Musul Won Foundation |
| Jaez | Letter |
| jaeza | housinge |
| Jaffa | Jaffa |
| Jaffas | Jaffa |
| Jafé | Japheth |
| Jagdish Bhagwati | Jagdish Bhagwati |
| Jagged Little Pill | Jagged Little Pill |
| Jagsthausen | Jagsthausen |
| Jagstzell | Jagstzell |
| jaguar | jaguar |
| Jaguar Racing | Jaguar Racing |
| Jaguar S-type | Jaguar S-Type |
| Jaguar X-type | Jaguar X-Type |
| Jaguar XJ | Jaguar XJ |
| Jaguar XK | Jaguar XK |
| Jaguar-europeu | European Jaguar |
| Jaguares de Chiapas Fútbol Club | Jaguares de Chiapas |
| Jaguarão | Jaguarão |
| jaguatirica | ocelot |
| Jah | Jah |
| Jahiliyyah | Jahiliyyah |
| Jahodná | Jahodná |
| Jailhouse Rock | Jailhouse Rock |
| Jaime Balmes | Jaume Balmes |
| Jaime da Silva Graça | Jaime Graça |
| Jaime de Portugal | Infante Jaime of Coimbra |
| Jaime I da Escócia | James I of Scotland |
| Jaime I de Aragão | James I of Aragon |
| Jaime I de Inglaterra | James I of England |
| Jaime II da Escócia | James II of Scotland |
| Jaime II de Aragão | James II of Aragon |
| Jaime II de Inglaterra | James II of England |
| Jaime III | James III |
| Jaime III da Escócia | James III of Scotland |
| Jaime IV da Escócia | James IV of Scotland |
| Jaime José Matos da Gama | Jaime Gama |
| Jaime Lucas Ortega y Alamino | Jaime Lucas Ortega y Alamino |
| Jaime V da Escócia | James V of Scotland |
| Jaime Zudáñez | Jaime Zudáñez Province |
| Jainismo | Jainism |
| Jainossauro | Jainosaurus |
| Jaipur | Jaipur |
| Jair Ventura Filho | Jairzinho |
| Jak II | Jak II |
| Jakarta | Jakarta |
| Jake Gyllenhaal | Jake Gyllenhaal |
| Jakob Bernoulli | Jacob Bernoulli |
| Jakob Böhme | Jakob Böhme |
| Jakob Dubs | Jakob Dubs |
| Jakob Georg Agardh | Jacob Georg Agardh |
| Jakob Hübner | Jacob Hübner |
| Jakob Roggeveen | Jakob Roggeveen |
| Jakob Stämpfli | Jakob Stämpfli |
| Jakob Theodor Klein | Jacob Theodor Klein |
| Jakob von Uexküll | Jakob von Uexküll |
| Jakobshavn Isbræ | Jakobshavn Isbræ |
| Jakubov | Jakubov |
| Jalal ad-Din Muhammad Rumi | Jalal ad-Din Muhammad Balkhi-Rumi |
| Jalal Talabani | Jalal Talabani |
| Jalalabad | Jalalabad |
| Jalapa | Jalapa |
| Jalapenho | Jalapeño |
| Jaleca | Undershirt |
| jaleco | white coat |
| jaleco (GB) | overallson |
| Jalisco | Jalisco |
| jam session | jam session |
| Jamaame | Jamaame |
| Jamaica | Jamaica |
| Jamaica Inn | Jamaica Inn |
| jamais | never |
| jamais registrado | on record |
| jamais visto | unprecedented |
| Jamal al-Din al-Afghani | Jamal al-Din al-Afghani |
| Jambi | Jambi |
| Jamboree | World Scout Jamboree |
| jamelão | Java plum |
| James A. Garfield | James A. Garfield |
| James Baldwin | James Baldwin |
| James Belushi | James Belushi |
| James Blake | James Blake |
| James Blunt | James Blunt |
| James Bond | James Bond |
| James Boswell | James Boswell |
| James Bradley | James Bradley |
| James Brown | James Brown |
| James Buchanan | James Buchanan |
| James Caan | James Caan |
| James Cagney | James Cagney |
| James Callaghan | James Callaghan |
| James Cameron | James Cameron |
| James Caviezel | James Caviezel |
| James Chadwick | James Chadwick |
| James Clark Ross | James Clark Ross |
| James Clerk Maxwell | James Clerk Maxwell |
| James Coburn | James Coburn |
| James Colosimo | James Colosimo |
| James Cook | James Cook |
| James Cromwell | James Cromwell |
| James De Carle Sowerby | James De Carle Sowerby |
| James Dean | James Dean |
| James Denton | James Denton |
| James Dewar | James Dewar |
| James Doohan | James Doohan |
| James Doolittle | Jimmy Doolittle |
| James Earl Jones | James Earl Jones |
| James Edward Meade | James Meade |
| James Ensor | James Ensor |
| James Fenimore Cooper | James Fenimore Cooper |
| James Francis Edward Stuart | James Francis Edward Stuart |
| James Francis Stafford | James Stafford |
| James Franck | James Franck |
| James Frazer | James George Frazer |
| James Froude | James Anthony Froude |
| James Gandolfini | James Gandolfini |
| James Gang | James Gang |
| James Garner | James Garner |
| James Gosling | James Gosling |
| James Gregory | James Gregory |
| James Hadley Chase | James Hadley Chase |
| James Hamilton | James Hamilton |
| James Haven Voight | James Haven |
| James Heckman | James Heckman |
| James Hetfield | James Hetfield |
| James Hunt | James Hunt |
| James Hutton | James Hutton |
| James Irwin | James Irwin |
| James Ivory | James Ivory |
| James Joyce | James Joyce |
| James Knox Polk | James K. Polk |
| James LaBrie | James LaBrie |
| James Lafferty | James Lafferty |
| James Last | James Last |
| James Lovell | Jim Lovell |
| James MacDonough | James MacDonough |
| James Macpherson | James Macpherson |
| James Madison | James Madison |
| James Marsden | James Marsden |
| James Marsters | James Marsters |
| James Mason | James Mason |
| James Matthew Barrie | J. M. Barrie |
| James McDivitt | James McDivitt |
| James McNeill Whistler | James McNeill Whistler |
| James Mill | James Mill |
| James Mirrlees | James Mirrlees |
| James Monroe | James Monroe |
| James Naismith | James Naismith |
| James Phelps | James and Oliver Phelps |
| James Potter | James and Lily Potter |
| James Prescott Joule | James Prescott Joule |
| James Randi | James Randi |
| James River | James River |
| James Root | James Root |
| James Russell Lowell | James Russell Lowell |
| James Sawyer Ford | James Sawyer Ford |
| James Shaffer | James Shaffer |
| James Sowerby | James Sowerby |
| James Spader | James Spader |
| James Sprenger | James Sprenger |
| James Stewart | James Stewart |
| James Stirling | James Stirling |
| James Strang | James Strang |
| James Taylor | James Taylor |
| James Thurber | James Thurber |
| James Tobin | James Tobin |
| James Ussher | James Ussher |
| James Valentine | James Valentine |
| James van Allen | James Van Allen |
| James Van Der Beek | James Van Der Beek |
| James Vincenzo Capone | James Vincenzo Capone |
| James Watson Cronin | James Cronin |
| James Watt | James Watt |
| James Webb Space Telescope | James Webb Space Telescope |
| James Woods | James Woods |
| Jameson Irish Whiskey | Jameson Irish Whiskey |
| Jamian de Corvo | Crow Jamian |
| Jamie Bell | Jamie Bell |
| Jamie Carragher | Jamie Carragher |
| Jamie Foxx | Jamie Foxx |
| Jamie Hyneman | Jamie Hyneman |
| Jamie Lee Curtis | Jamie Lee Curtis |
| Jamie Uys | Jamie Uys |
| Jamie Zawinski | Jamie Zawinski |
| Jamiroquai | Jamiroquai |
| Jammerbugt | Jammerbugt municipality |
| Jammu | Jammu |
| Jammu e Caxemira | Jammu and Kashmir |
| Jamtli | Jamtli |
| Jan Baptista van Helmont | Jan Baptist van Helmont |
| Jan Brueghel o jovem | Jan Brueghel the Younger |
| Jan Brueghel o velho | Jan Brueghel the Elder |
| Jan Commelijn | Jan Commelin |
| Jan Davidszoon de Heem | Jan Davidszoon de Heem |
| Jan de Hertog | Jan de Hartog |
| Jan Frans van Bloeman | Jan Frans van Bloemen |
| Jan Hendrik Oort | Jan Oort |
| Jan Hus | Jan Hus |
| Jan Huygen van Linschoten | Jan Huyghen van Linschoten |
| Jan III Sobieski | John III Sobieski |
| Jan Kochanowski | Jan Kochanowski |
| Jan Koller | Jan Koller |
| Jan Kopecky | Jan Kopecký |
| Jan Lammers | Jan Lammers |
| Jan Lukasiewicz | Jan Łukasiewicz |
| Jan Magnussen | Jan Magnussen |
| Jan Matejko | Jan Matejko |
| Jan Matsys | Jan Matsys |
| Jan Mayen | Jan Mayen |
| Jan Neruda | Jan Neruda |
| Jan Peter Balkenende | Jan Peter Balkenende |
| Jan Potocki | Jan Potocki |
| Jan Provoost | Jan Provoost |
